Application of an austenitic nitrogen-alloyed 6MO stainless steel for seawater desalination (RO) and waste water treatment

Jasner, M.R.

doi:10.1016/0011-9164(91)85138-k

Cited by 8 publications

(2 citation statements)

References 4 publications

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“…What's more, nitrogen also has a certain influence on corrosion resistance [15][16][17]. In the pitting resistance equivalent number [18] (PREN = %Cr + 3.3%Mo + 30%N), nitrogen plays a positive role in improving pitting potential of stainless steel. Some researches show that nitrogen can improve the stability of passive film of stainless steel [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of nitrogen on microstructure and corrosion resistance of Cr15 super martensitic stainless steel

Chang

2019

Corrosion Engineering, Science and Technology

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To investigate the influence of nitrogen on structure and corrosion resistance of Cr15 super martensitic stainless steels (SMSS), two types (N-free and N-0.12%) of specimens were quenched at 1050°C and tempered at different temperatures, and then, optical microscope, transmission electron microscopy, X-ray diffraction, potentiodynamic polarisation, immersion experiments and Kelvin Probe Force Microscope were used to characterize its microstructures and corrosion properties. The experimental results show that the microstructure in the N-free Cr15 super martensitic stainless steel is a biphasic tissue with alternating martensite and austenite distribution while quenched at 1050°C and tempered between 600 and 700°C. The nitrogen addition increases the content of austenite, and changes the austenite morphology significantly into the coarse block and strip distribution. What's more, micro-galvanic corrosion is formed between austenite and martensite, which deteriorates the corrosion resistance of the SMSS.

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Section: Introductionmentioning

confidence: 99%

Effect of nitrogen on microstructure and corrosion resistance of Cr15 super martensitic stainless steel

Chang

2019

Corrosion Engineering, Science and Technology

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“…High-Mo austenitic stainless steel (HMASS) has been intensively developed and widely applied in a wide variety of fields with excellent mechanical properties and corrosion resistance. [1][2][3][4][5] AL-6X (6%Mo) is widely used in marine industries, due to its superior seawater corrosion resistance, toughness and welding properties. [6][7][8] Outokumpu developed 7%Mo 654SMO super austenitic stainless steel (S32654) in the 1990s for more severe service conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of Mo macrosegregation during ingot casting of high-Mo austenitic stainless steel

Zhu

Zhang

et al. 2015

Ironmaking & Steelmaking

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Mo macrosegregation was studied through the comparison of numerical simulation of the ingot pouring process and experiment on as-cast 500 kg high-Mo austenitic stainless steel ingot. The simulated results showed the evolution of temperature, melt velocity and the patterns of Mo macrosegregation, and revealed the effects of pouring temperature and cooling rate on macrosegregation. The predicted variation of Mo macrosegregation was compared with measurement values from an industrial ingot along the vertical centreline and horizontal direction. Severe normal and gravity segregation were observed. Although a basic agreement was obtained, the lack of a sufficiently fine numerical grid and the neglect of sedimentation for free equiaxed grains in the prediction brought about the absence of A-segregation and Vsegregation. Further investigation would be needed to perform this investigation. The predicted results also confirmed that Mo macrosegregation in the ingot could be effectively diminished by improving cooling rate and decreasing pouring temperature.

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Austenitic CrNi steels

Heitz

Subat

2014

Corrosion Handbook

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Application of an austenitic nitrogen-alloyed 6MO stainless steel for seawater desalination (RO) and waste water treatment

Cited by 8 publications

References 4 publications

Effect of nitrogen on microstructure and corrosion resistance of Cr15 super martensitic stainless steel

Effect of nitrogen on microstructure and corrosion resistance of Cr15 super martensitic stainless steel

Numerical simulation of Mo macrosegregation during ingot casting of high-Mo austenitic stainless steel

Austenitic CrNi steels

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